表观量子效率(aqy)可在一定程度上反映PSII光化学效率的大小。

Apparent quantum yield (AQY) can partly reflect the photochemistry activity of PSII.

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图4对照及缺铁植株非光化学猝灭光化学效率(PQ)光强的响应。左侧为玉米，右侧为大豆。

Fig. 4 Response of NPQ to PFD in control and Fe-deficient plants. The left side is maize; the right side is soybean.

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因此位图的地位依然很重要，但是对于那些可以分解成基本形状的图像，比如图表、标志、和化学公式等等，矢量文件格式天生就具有较高的效率。

So bitmaps play a useful role, but for those images that can be decomposed into basic shapes such as diagrams, logos, and chemical formulas, a vector file format is inherently more efficient.

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